J. A. Associates

 

RPN Engineering Calculator™

 
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J. A. Associates.
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The Trigonometry Keypad 

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A trigonometry calculator with many common and some special functions:

H, X, Ø: These three buttons are used to solve right triangle problems with only two known variables (Shift+X is used to enter the ordinate, Y, and Shift+Ø is used to enter, theta, the angle opposite Y).

P:R: Polar to Rectangular, convert polar coordinates to rectangular coordinates; and (Shift+) Rectangular to Polar, coordinate conversion function

S1, S2, S3: These three will solve for any defined plane triangle with only three known variables (Shift+S1, S2, or S3 is used to enter the adjacent angles A1, A2, or A3)

h:m: Convert between hours-minutes-seconds and decimal hours. (It works for degrees too)!

sin thru cot: Calculate all the trig functions, and their inverse, with these six buttons.

p: Eight constants involving pi (3.1415..).

arc:
Solve arc length problems (chord, angle, or arc length).

snh, csh, tnh: Hyperbolic sine, cosine and tangent and their inverse.

R:D: Convert between grads, radians, and degrees.

Öx Square root of x. Ctrl+X from the keyboard.

x²:
  x squared. Shift+Ctrl+X from the keyboard.

1/x:
Reciprocal of x. X from the keyboard. 

V·A: Enter a diameter and calculate 8 miscellaneous Volumes and/or Areas of cylinders, cones, frustums, spheres, and circles. 

 

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Last updated 04/30/2008